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Like most pioneers, they learned as they went along and paid dearly for their mistakes.
On 7 October 1935, their solvent plant (which had been in operation for only 10 months) was totally destroyed in a disastrous explosion from a hexane vapor leak.
During 1934 the 1/4 inch shorter units continue to be produced with the 3 barrel hinge plates still on the outside of the case.
Blaisdell applies for the Zippo patent on May 17, 1934, after test marketing the product for two years. The first model has four-barrel hinge with the plates still located on the outside of the case.
Blaisdell produces first square-cornered windproof lighter with no diagonal lines on the corners.
This model is 2-7/16 inches tall, 1/4 inch taller than the now standard Zippo lighter. The Zippo have eight holes ,located on each side of the chimney and a three-barrel hinge outside of the case.
Operations included the final set-up of the lighter case and insert, surface engraving, cleaning, repair clinic, Items such as packaging and instruction pamphlets, were all “Made in Canada” Dates and timelines about these changes, are VERY difficult to nail down to an exact date, but these are fairly close, based on written info by Zippo, as well as other collectors that have taken the time to share their knowledge with me.
At this time, the insert stamp was on the bottom section of the insert.
Due to the scarcity of these lighters it is not possible to document all models/variations here The first lighters made by Zippo were much squarer than those seen today as originally the lighter cases were made from tubing with the base soldered on. All early lighters had either a flat (1933-1941) or a round (1942-1946) bottom.
This model was made with the sportsman in mind, and featured a special hinge with a small "D" shaped loop for attaching a lanyard, to prevent the loss of the lighter.
It is my opinion that this model, when first introduced, did not come with a lanyard.
Soya Products and Stock Feeds were listed as one of the companies five main divisions, along with Paint and Varnish. In order to aid the war effort, Royal converted its manufacturing to war work exclusively.
Royal would manufacture machine guns, rifles, bullets, propellers, and spare parts for airplane engines.Notice the location of the "0" in 1950 in relation to the "D" in Ltd. This style insert was used till late1954The "0" in 1950 was now further right of the "D" in "LTD".